Compressor cylinder



Feb. 3, 1931. J. o. LEWIS 1,791,364

COMPRES SOR CYLINDER Filed June 10, 1929 l'll 1 .L

TATES PATENT OFFICE,

JAMES O. LEWIS, OF TULSA, OKLAHOMA COMPRESSOR CYLINDER Application filedJune 10, 1929. Serial No. 369,582. I

My invention relates to air and gas comfiow through the ports andvalve-chamber to pressors and has for its principal object to an outletpipe 21 leading to a pressure flow obviate the loss in eiiiciency ofsuch devices line, (not shown); ordinarily incident to distortion of thevalves The cylinder head 11 is sealingly secured by heat of compressionand to drop in pres to the open end '10 of the body member 2 by 55 sureincident to cooling of the compressed a gasket 22 and bolts 23, andincludes spaced medium after it leaves the compressor. double Walls 24forming a cooling space 25 In accomplishing this and other objects ofhaving communication with the cooling the invention, 1 have providedimpriaved dc chamber 8 and provided with an outlet tails of structure,the preferred terms of pipe 26. 60

which are illustrated in the accompanying Extending through the walls 21 in 011'- drawmgs, wherein: cular tormatlon are channels or elongatedFig. 1 is a central longitudinal section ports 27 also formingextensions of the clearthrou h the cvlinder illustratm the 1mance siaceat that end of the c hnder and 1 proved means for cooling compressedgases connecting the outer end of the compression 00 therein. or pistonchamber with the chamber of a Fig. 2 is a. transverse section throughthe valve housing 28 on the outer side of the cooling means on the line22, Fig. 1. head, containing a valve 29 for controlling Referring indetail to the drawings: flow through the ports and valve chamber to 1designates a double acting compressor an outlet pipe 30 for connectionwith a pres- 13 cylinder including a body member 2 having sure flowline, (not shown). 7 a compression or piston chamber 3 fitted with Withthe compressor in operation reciproa piston 4t and rod 5 and surroundedby cation of the piston in the compression or double side walls 6 andend wall 7 enclosing piston chamber 3 causes charges of gases to acooling chamber 8 supplied with cooling be alternately drawn through theintake medium through an inlet pipe 9 and having valves 13 into oppositeends of the chamber an open end 10 provided with a removable andcompressed by opposite strokes of the head 11, the side walls beingprovided with piston. openings 12 in their bottom side and at op- Whenthe piston moves rearwardly in the posit-e ends thereof fitted withintake valves cylinder as indicated by arrows, the inlet i3 13communicating with the compression valve at the rear end of the cylinderis closed chamber and with an intake manifold 14. and gases in theopposite end of the cylinder Formed on the end wall 7 is an aperturedare compressed and forced through the ports flange 15 for mounting thecylinder on an en- 19, wherein the compressed gases are cooled gineframe, and extending through the wall by the cooling medium in thechamber 8 concentric with the compression or piston previous to contactwith the discharge valve chamber?) is a bearing sleeve 16 slidably enandtheir ejection into the outlet pipe 21. gaged by the rod 5 which extendsthrough a Gases drawn into the to ward portion of valve housing 17secured on the outer side of the compression or piston chamber duringthe wall 7 and has a packing gland 18 sealthe rearward stroke of thepiston are comingly engaging the rod. pressed during the forward stroke,forced Provided in the end wall 7 in radial spaced through the ports 27and cooled therein by relation with the bearing sleeve 16 are chanthecooling medium in chamber 8 previous nels 19 forming clearance spaceadditional to to contact with the discharge valve 29 and 45 that in thecompression or piston chamber ejection into the outlet pipe 30. 3 andconstituting elongated ports extending Thus it is apparent that, with myimproved through the cooling chamber 8 and connectcylinder, thecompressed gases are cooled being the inner end of the compression orpistore they reach the discharge valve, thereby 5 ton chamber 3with thechamber of the valve avoiding distortion of the valve and resultnohousing 17, containing a valve 20 controlling ant loss of control of thegases, and that by cooling the gases prior to their leaving thecylinder, drop in pressure incident to cooling may be compensated for inthe piston stroke to insure discharge of the gases from the cylinder atdesired working pressure.

What I claim and desire to secure by Letters Patent is:

1. A compressor cylinder including a piston chamber and channels leadingfrom said chamber and providing additional clearance space for saidchamber, and a valve adapted to seat on the outer ends of the channels,the cylinder having cooling space about the channels.

2. A compressor cylinder including a piston chamber and a plurality ofspaced channels leading from said chamber and providing additionalclearance space for said chamber, and a valve adapted to seat on theouter ends of the channels, the cylinder having space for travel ofcooling fluid about the channels whereby compressed fluid is coolerbefore leaving said clearance space.

3. A compressor cylinder having a surrounding cooling chamber andincluding a hollow head member having communication with said coolingchamber and having channels therethrough providing elongated dischargeports, a valve adapted to seat on the outer ends of said ports, andmeans for effecting flow of cooling medium through the cooling chamberand about said ports.

4. A compressor cylinder including a surrounding cooling chamber and ahollow head member having communication with said chamber and having anannular series of channels therethrough providing elongated dischargeports, an annular valve adjacent the outer ends of the ports and meansfor urging said valve into seating engagement with said ports at theouter ends of said channels.

A compressor cylinder having a surrounding cooling chamber and includinga hollow head member having communication with said cooling chamber andhaving an annular series of channels therethrough providing elongateddiscnarge ports, an annular valve adjacent the outer ends of the ports,means for urging said valve into seating engagement with said ports atthe outer ends of the channels, a valved inlet for the cylinder, apiston in the cylinder and means for cfi'er-ting flow of cooling mediumthrough the cooling chamber and about said ports.

In testimony whereof I affix my signature.

JAMES O. LEWIS.

